Traffic is building around Reedham and Purley after a rush hour crash.

Transport for London (TfL) is warning drivers to avoid the A23 Brighton Road and use alternative routes if possible as queues are building in the area.

The TfL Traffic News Twitter account posted at 5.40pm: "A23 Brighton Road (Reedham) - blocked northbound (London-bound) near the station, due to a collision. Use other routes. Queues building."

It appears as though the collision occurred on the Brighton Road near the junction with Grovelands Road.

It is not yet known how many vehicles were involved in the crash or if anyone has suffered any injuries.

The Metropolitan Police and London Ambulance Service have both been contacted for information on the incident.

We will bring you the latest updates when we have them. You can follow in our blog below:

19:16

'The moped driver was on the floor'

Claire Headman was on her way home when she noticed a “moped driver on the floor” on Brighton Road.

The 44-year-old, who lives in Purley, told the Advertiser: “We didn’t see the crash happen but we were coming out of Purley Rise and there were two cars pulled up to the side on the right going towards the Tesco with a moped on the floor between them.

“The moped driver was on the floor with two people looking after him - one of them looked like she was wearing a nurse’s top.

“Another car pulled up on the other side and they were directing traffic until the police/ambulance arrived. We then turned right away from the crash.”

Claire added that she “hoped the moped driver was ok”.

18:43

Cars and moped reportedly involved in collision

According to a witness who contacted the Advertiser the crash reportedly involved more than one car and a moped. She added people were helping to direct traffic.

18:20

Nearest fire station not called

We have contacted Purley fire station, which is based on Broghton Road opposite the junction for Old Lodge Lane, and a spokesman said crews have not been called to a crash along the road.

London Fire Briagde (LFB) firefighters

18:08

Where did the crash take place?

Live Google traffic maps appear to show the crash took place on the Brighton Road near the junction with Grovelands Road. The red lines on the map show where traffic is queuing and moving slowly

Google live traffic map (Image: Google)

18:01

Queues building on Brighton Road

17:59

What we know so far

Good afternoon and welcome to our live updates of the traffic problems around Reedham and Purley following a crash.

This is what we know so far:

A23 Brighton Road northbound is blocked between Reedham and Purley following a crash

It appears as though the crash occurred near the junction with Grovelands Road and not far from Reedham station